Thomas has ad blocker turned on in his Chrome browser, yet still sees ads sometimes. Leo says that ad blocker doesn't actually block all ads. It now has something called the "acceptable ad initiative," where companies can pay ad blocker to not block their ad.
Thomas says he also has an extension for preventing pop-ups. Leo thinks that Chrome does a pretty good job by itself when it comes to blocking popups, although one of the problems we've seen with Chrome, is that there were a number of Chrome extensions that were sold. Then the people who bought them used them to replace the ads on websites with their own. Google has continued those extensions and will continue to do so when it comes up.